Easy to install, the John Guest Speedfit Plug is a simple push-fit technology for a hassle-free usage with no flux, flames or a mess. The added benefit of 'Twist and Lock' provides increased compression and greater security. It is an efficient and long-lasting leak-proof connection, suitable for plumbing of domestic hot and cold water services, central heating applications including pressurised and combined systems. Designed, manufactured and assembled in the UK by John Guest Speedfit.